西南天山乌什县晚三叠世镁铁-超镁铁质层状杂岩体年代学及地球化学研究

胡朝斌; 李培庆; 辜平阳; 陈锐明; 查显锋; 庄玉军

西南天山乌什县晚三叠世镁铁-超镁铁质层状杂岩体年代学及地球化学研究

1.
中国地质调查局西安地质矿产研究所, 西安 710054
2.
中国地质大学地球科学与资源学院, 北京 100083

基金项目:

中国地质调查局地质调查项目“特殊地质地貌区填图试点” DD20160060

“新疆1：5万喀伊车山口等3幅艰险区试点项目” 12120114042701

“东昆仑成矿带木孜塔格铅锌铜金多金属矿调查评价区地质矿产调查” DD20160002

详细信息

作者简介:
胡朝斌(1990-), 男, 助理工程师, 岩石地球化学专业。E-mail:405825740@qq.com

中图分类号: P595;P597
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- 被引次数: 0
出版历程
- 收稿日期: 2016-09-12
- 刊出日期: 2016-12-28

GEOCHRONOOGICAL AND GEOCHEMICAL STUDY OF THE LATE TRIASSIC LAYERED MAFIC-ULTRAMFIC INTRUSIONS IN BEISHAN AREA OF WUSHI COUNTY, SOUTHWEST TIANSHAN

1.
Xi'an Center of Geological Survey, Xi'an 710054, China
2.
School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China

摘要

摘要: 镁铁-超镁铁质层状杂岩体被认为是岩石圈伸展的重要标志之一，携带有丰富的地幔信息，是研究地幔物质组成、深部地质作用的绝佳对象。西南天山乌什县北巴勒的尔喀克沟地区新发现的镁铁-超镁铁质岩体具有层状杂岩特征，获得辉长岩锆石U-Pb年龄为224±4 Ma，属于晚三叠世。岩石地球化学分析显示富水、富碱、轻稀土富集、重稀土亏损以及明显富集Th、U、Nb、Ta、La、Ce不相容元素等特征，指示其源自于含水的富集型地幔源区，是石榴石二辉橄榄岩较低程度部分熔融的产物。其原生岩浆可能为富铁、钛的高镁玄武质岩浆，岩石系列主要受分离结晶作用控制，同化混染作用影响小。该期岩浆活动于南天山洋盆闭合、板块的碰撞造山活动之后的陆内造山阶段，代表了板块拉伸背景下幔源岩浆演化的产物，指示西南天山地区在三叠纪末可能存在一期岩石圈伸展事件。
- 西南天山 /
- 镁铁-超镁铁质 /
- 层状杂岩
Abstract: Layered Mafic-ultramafic intrusions, which carry abundant information of mantle and provide an excellent approach to probe the mantle material composition, plate tectonic and deep geological process, are generally considered to be an important symbol of lithosphere extension, We discovered a suit of layered Mafic-ultramafic intrusions in Southwest Tianshan area, and obtained the zircon U-Pb age of gabbros of 224±4 Ma. These rocks are characterized by the enrichment of LREE, H₂O, Na₂O+K₂O and incompatible elements such as Th, U, Nb, Ta, etc., and depleted in HREE. They might be derived from enriched mantle, which is formed by low degree partial melting of garnet lherzolite. The primary magma may be high Mg basaltic magma which was rich in iron and titanium and mainly controlled by the fractional crystallization. This magam in the continental orogenic stage was actived in the environment of intracontinent orogen after the closure of the South Tianshan ocean and post collisional orogeny, which derived from mantle in the envirnment of extensional environment. We can concluded that the Southwest Tianshan area was under an extensional tectonic seting during late Triassic.
- Southwest Tianshan area /
- mafic-ultramafic /
- layered intrusions

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图 1 研究区区域地质示意图(a, 底图修改自杨树锋等^[28])及研究区地质简图(b)

Figure 1. Regional geological map and geological sketch map of study area

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图 2 巴勒的尔喀克沟岩体野外宏观特征

Figure 2. Outcrop photos of the layered Mafic-ultramafic intrusions

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图 3 巴勒的尔喀克沟岩体岩石镜下特征

a—橄辉岩(-); b—蛇纹石化、透闪石化橄辉岩(+); c—含橄榄辉石岩(+); d—辉长岩(+); e—辉石闪长岩(+); f—闪长岩(-); Ol—橄榄石; Opx—斜方辉石; Cpx—单斜辉石; Tr—透闪石; Ser—蛇纹石; Hb—角闪石; Pl—斜长石; Mt—磁铁矿; Ilm—钛铁矿; Ap—磷灰石

Figure 3. Microscope characteristics of the Baladikagou pluton

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图 4 辉长岩锆石阴极发光图像、U-Pb年龄协和图

Figure 4. CL images of zircons, U-Pb concordia diagram

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图 5 Zr/TiO₂*0.0001-Nb/Y图解^[32]

Figure 5. Zr/TiO₂*0.0001-Nb/Y diagram

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图 6 稀土元素球粒陨石标准化配分模式图(左)、微量元素原始地幔标准化蛛网图(右)

Figure 6. Chondrite-normalized REE patterns (left) and Spider plot of trace element of samples (right)

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图 7 Zr-Nb和Zr-Y图解^[40](图例同图 6)

Figure 7. Diagrams of Zr-Nb and Zr-Y

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图 8 球粒陨石标准化(Tb/Yb)_N-(La/Sm)_N^[41]和Ce/Y-Zr/Nb^[42]图解(图例同图 6)

Figure 8. The chondrite-normalized (Tb/Yb)_N-(La/Sm)_N and Ce/Y-Zr/Nb diagrams

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图 9 Th/Nb-SiO₂、Nb/La-SiO₂、K₂O/TiO₂-SiO₂、La/Sm-La图解(图例同图 6)

Figure 9. Diagrams of Th/Nb-SiO₂, Nb/La-SiO₂, K₂O/TiO₂-SiO₂ and La/Sm-La

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图 10 哈克图解(图例同图 6)

Figure 10. Harker variation diagram

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表 1 辉长岩(5004-3) 锆石U-Pb同位素分析结果

Table 1. Zircon U-Pb Isotopic analysis composition of gabbro (5004-3)

分析号	Pb/10^-6	Th/10^-6	U/10^-6	Th/U	年龄/Ma						比值						协和度
分析号	Pb/10^-6	Th/10^-6	U/10^-6	Th/U	²⁰⁷Pb/²⁰⁶Pb	1σ	²⁰⁷Pb/²³⁵U	1σ	²⁰⁶Pb/²³⁸U	1σ	²⁰⁷Pb/²⁰⁶Pb	1σ	²⁰⁷Pb/²³⁵U	1σ	²⁰⁶Pb/²³⁸U	1σ	协和度
5004/3/1	105	172	595	0.29	487.2	122.49	244.3	12.18	219.7	3.69	0.0569	0.003	0.2720	0.015	0.03467	0.0006	0.11
5004/3/2	36	116	198	0.59	328.9	157.34	237.1	15.14	227.8	4.34	0.0530	0.004	0.2631	0.019	0.03597	0.0007	0.04
5004/3/3	29	91	161	0.56	325.5	227.15	234.3	22.01	225.1	5.64	0.0529	0.006	0.2596	0.027	0.03554	0.0009	0.04
5004/3/4	80	194	443	0.44	221.7	155.43	229.8	14.21	230.4	4.30	0.0506	0.004	0.2540	0.018	0.03639	0.0007	0
5004/3/5	177	328	1057	0.31	575.7	80.48	249.8	8.24	216.3	2.98	0.0592	0.002	0.2789	0.010	0.03412	0.0005	0.15
5004/3/6	51	230	270	0.85	269.6	173.93	221.8	15.63	217.1	4.46	0.0516	0.004	0.2442	0.019	0.03425	0.0007	0.02
5004/3/7	47	235	251	0.94	174.0	188.49	214.5	16.22	218.0	4.62	0.0496	0.004	0.2353	0.020	0.03439	0.0007	-0.02
5004/3/8	112	265	632	0.42	467.5	120.60	251.1	12.21	228.1	3.81	0.0564	0.003	0.2805	0.015	0.03602	0.0006	0.1
5004/3/9	150	663	811	0.82	220.1	142.26	229.0	12.90	229.6	4.05	0.0505	0.003	0.2530	0.016	0.03625	0.0007	0
5004/3/10	108	613	546	1.12	339.5	114.16	237.7	10.86	227.2	3.59	0.0533	0.003	0.2638	0.014	0.03587	0.0006	0.05
5004/3/11	532	543	3293	0.16	468.5	77.53	245.7	7.68	222.9	3.15	0.0564	0.002	0.2738	0.010	0.03518	0.0005	0.1
5004/3/12	63	117	354	0.33	253.6	323.41	221.3	30.24	218.2	7.91	0.0513	0.008	0.2435	0.037	0.03443	0.0013	0.01
5004/3/13	79	619	379	1.63	253.6	368.79	233.5	36.71	231.6	6.55	0.0513	0.009	0.2585	0.046	0.03658	0.0015	0.01
5004/3/14	50	209	264	0.79	435.0	178.48	246.3	18.10	227.2	5.10	0.0556	0.005	0.2746	0.023	0.03588	0.0008	0.08
5004/3/15	112	306	653	0.47	382.1	115.05	239.1	11.14	225.1	3.77	0.0543	0.003	0.2655	0.014	0.03553	0.0006	0.06
5004/3/16	84	217	465	0.47	595.1	137.03	263.6	14.93	228.1	4.41	0.0598	0.004	0.2964	0.019	0.03602	0.0007	0.16
5004/3/17	70	275	397	0.69	238.6	165.99	224.3	14.95	223.3	4.53	0.0510	0.004	0.2472	0.018	0.03525	0.0007	0

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表 2 样品全岩主量(%)及微量元素(10^-6)分析结果

Table 2. Major elements and trace elements analysis data

样品编号	5009-9	5009-10	5009-18	5009-19	5009-20	5016-2	5016-4	5016-7	5002-5	5016-4	5011-2	5011-3	5042-3	HF-39-3	5004-3	5015-4	5013-1
岩性	橄辉岩	橄辉岩	橄辉岩	橄辉岩	橄辉岩	橄辉岩	橄辉岩	辉石岩	辉石岩	辉石岩	辉石岩	辉石岩	辉石岩	辉长岩	辉长岩	辉长岩	辉长岩
SiO₂	42.55	42.63	44.83	44.52	44.18	44.38	43.73	44.62	42.32	43.73	41.20	40.50	42.16	46.34	48.02	42.86	39.89
AI₂O3	6.95	7.08	6.42	6.53	6.67	7.96	10.42	6.80	11.36	10.42	9.64	9.82	10.36	11.43	12.64	10.61	10.82
Fe₂O₃	4.05	3.40	2.78	2.73	2.46	2.45	1.80	2.82	2.46	1.80	1.82	1.89	1.84	2.03	2.15	1.69	1.71
FeO	8.25	8.60	8.10	8.35	8.65	9.35	10.20	8.82	10.90	10.20	9.65	10.70	10.35	9.10	8.05	9.80	10.00
CaO	8.92	10.20	10.61	10.90	11.37	10.44	9.11	11.75	6.62	9.11	10.52	9.82	7.07	6.52	6.58	6.74	7.92
MgO	19.65	19.08	18.81	18.41	18.07	16.08	12.63	16.86	12.59	12.63	13.53	14.12	14.88	9.29	8.36	10.33	10.35
K₂O	0.09	0.10	0.14	0.16	0.15	0.70	1.13	0.50	0.84	1.13	0.88	0.74	0.59	1.38	2.99	0.10	0.26
Na₂O	0.22	0.22	0.34	0.33	0.30	0.90	1.67	0.44	2.08	1.67	1.43	1.23	0.23	1.47	2.76	1.10	1.17
TiO₂	1.94	1.79	1.83	1.95	1.95	2.39	2.76	2.22	2.97	2.76	2.63	2.76	3.38	3.00	3.02	2.75	2.80
P₂O₅	0.23	0.25	0.26	0.26	0.28	0.35	0.43	0.29	0.45	0.43	0.28	0.40	0.54	0.49	0.53	0.42	0.46
MnO	0.13	0.14	0.16	0.17	0.19	0.17	0.19	0.18	0.19	0.19	0.19	0.21	0.22	0.15	0.14	0.17	0.19
灼失※	6.52	6.04	5.23	5.21	5.30	4.44	5.59	4.28	7.00	5.59	7.86	7.43	8.03	8.52	4.46	13.12	14.12
H₂O+	5.12	3.96	3.04	3.76	3.52	2.16	2.86	2.34	4.12	2.86	2.56	2.82	4.60	2.96	2.46	4.56	3.00
FeOt	11.89	11.66	10.60	10.81	10.86	11.55	11.82	11.36	13.11	11.82	11.29	12.40	12.01	10.93	9.98	11.32	11.54
Fe₂O₃t	13.22	12.96	11.78	12.01	12.07	12.84	13.14	12.62	14.57	13.14	12.54	13.78	13.34	12.14	11.10	12.58	12.82
Mg#	77.60	77.44	78.82	78.13	77.72	74.48	69.14	75.69	66.81	69.14	71.54	70.48	72.22	64.07	63.71	65.68	65.29
La	22.50	26.20	28.00	26.70	25.90	33.20	27.6	34.3	48	46.4	42.2	42.8	63.1	47.00	51.30	46.50	48.50
Ce	50.40	55.40	56.40	55.80	56.00	68.30	58.4	72.6	97.2	94.1	87	87.2	131	96.70	105.00	91.80	95.90
Pr	6.62	6.780	7.08	7.11	7.24	8.74	7.52	9.22	11.8	11.4	10.6	10.6	15.9	11.60	12.90	11.00	11.40
Nd	27.20	26.80	27.60	29.00	28.50	36.20	30.00	35.9	46.5	44.4	42.1	42.1	63.1	47.60	52.20	41.90	42.10
Sm	5.92	5.40	5.72	5.95	6.02	7.40	6.58	7.68	8.74	8.93	8.38	8.12	11.2	9.55	9.92	8.10	8.55
Eu	1.87	1.77	1.75	1.83	1.82	2.20	1.89	2.12	2.72	2.77	2.51	2.28	3.32	2.65	3.06	2.15	2.30
Gd	5.08	4.68	5.00	4.95	5.02	6.32	5.78	6.79	7.58	7.43	7.05	6.93	8.83	8.31	8.00	6.77	7.12
Tb	0.79	0.71	0.77	0.78	0.76	0.96	0.80	0.95	1.17	1.11	1	0.95	1.34	1.14	1.23	0.95	0.95
Dy	3.71	3.39	3.53	3.61	3.72	4.45	4.16	4.85	5.38	5.26	5.05	4.92	6.03	5.66	5.83	4.79	4.97
Ho	0.64	0.62	0.63	0.62	0.67	0.82	0.70	0.92	0.94	0.95	0.92	0.88	1.04	1.04	1.02	0.85	0.84
Er	1.60	1.55	1.57	1.55	1.67	1.98	1.70	2.32	2.4	2.31	2.25	2.22	2.66	2.64	2.58	2.12	2.16
Tm	0.22	0.21	0.21	0.22	0.24	0.26	0.24	0.33	0.32	0.31	0.3	0.3	0.35	0.37	0.35	0.29	0.3
Yb	1.29	1.25	1.25	1.31	1.40	1.56	1.37	2.05	1.93	1.85	1.89	1.77	2.18	2.27	2.14	1.70	1.84
Lu	0.19	0.18	0.18	0.20	0.21	0.22	0.20	0.31	0.28	0.26	0.26	0.24	0.3	0.34	0.32	0.24	0.26
Y	15.50	14.6	15.20	15.20	15.90	18.80	17.00	21.6	22.5	21.7	21.6	20.8	24.7	25.00	25.30	20.30	21.50
∑REE	143.53	149.54	154.89	154.83	155.07	191.41	163.94	201.94	257.46	249.18	233.11	232.11	335.05	261.87	281.15	239.46	248.69
LREE	114.51	122.35	126.55	126.39	125.48	156.04	131.99	161.82	214.96	208.00	192.79	193.10	287.62	215.10	234.38	201.45	208.75
HREE	29.02	27.19	28.34	28.44	29.59	35.37	31.95	40.12	42.50	41.18	40.32	39.01	47.43	46.77	46.77	38.01	39.94
LREE/HREE	3.95	4.50	4.47	4.44	4.24	4.41	4.13	4.03	5.06	5.05	4.78	4.95	6.06	4.60	5.01	5.30	5.23
δEu	1.02	1.05	0.98	1.00	0.98	0.96	0.92	0.88	1.00	1.01	0.97	0.91	0.99	0.89	1.02	0.86	0.88
La_N/Yb_N	12.51	15.03	16.07	14.62	13.27	15.27	14.45	12.00	17.84	17.99	16.02	17.34	20.76	14.85	17.20	19.62	18.91
La_N/Sm_N	2.45	3.13	3.16	2.90	2.78	2.90	2.71	2.88	3.55	3.35	3.25	3.40	3.64	3.18	3.34	3.71	3.66
Gd_N/Yb_N	3.26	3.10	3.31	3.13	2.97	3.35	3.49	2.74	3.25	3.32	3.09	3.24	3.35	3.03	3.09	3.29	3.20
Cu	123	105.00	222.00	265.00	127.00	95.80	141.00	78.8	124	151	98.60	154	150	92.50	276.00	89.2	88.2
Pb	2.71	2.59	3.52	3.83	3.02	2.89	2.70	7.72	3.84	12.6	3.27	6.8	4.68	9.63	2.77	5.64	6.21
Zn	97.40	89.30	96.50	98.30	110.00	118	108.00	139	136	120	116	129	183	170.00	90.80	121.00	124.00
Cr	1740.00	1860.00	1740.00	1660.00	1620.00	1340	1520.00	980.00	691.00	744.00	915.00	1060.00	652	452.00	202.00	578.00	521.00
Ni	703.00	790.00	759.00	725.00	704.00	485	542.00	456	397	326.00	392.00	458	313.00	159.00	115.00	262.00	248.00
Co	83.60	83.00	90.60	87.60	81.30	68.7	73.60	72.5	68.1	57.80	60.60	66.3	60.50	46.40	42.10	55.60	53.60
Li	25.40	19.50	21.10	21.90	14.30	44.9	38.80	51.3	30.2	46.40	55.70	60.9	46.50	46.80	20.10	102.00	100.00
Rb	5.34	4.00	5.48	6.13	6.59	49.3	41.00	32.2	38.5	47.40	19.70	20.8	43.90	90.20	58.60	6.03	6.50
Cs	1.50	1.47	1.28	2.13	1.37	13.6	9.24	7.08	8.66	2.19	2.50	3.54	7.70	17.40	4.16	0.86	0.45
Sr	87.40	88.20	94.80	91.20	88.80	112	96.8	163	255	323	792	499.00	173.00	402.00	402.00	439.00	523.00
Ba	44.60	47.40	61.10	54.80	45.00	81.7	91.2	145	302	724	779.00	510.00	86.40	290.00	1360.00	92.80	139.00
V	236.00	224.00	205.00	214.00	216.00	256	250	293	261	301	273.00	304	313.00	310.00	301.00	284.00	293.00
Sc	29.00	32.70	36.40	40.40	40.80	35.4	37.4	28	20.9	30.6	29.10	29.9	28.90	27.00	22.00	25.80	26.70
Nb	22.90	23.00	24.40	23.50	24.30	29.5	24.9	36.9	45.8	43.6	42.70	38.5	56.20	50.40	49.80	43.50	46.30
Ta	2.02	2.04	2.04	2.02	2.05	2.26	1.95	2.82	3.46	3.1	2.90	2.7	4.06	3.78	3.35	3.02	3.12
Zr	146.00	145.00	158.00	160.00	167.00	201	170	218	275	246	250.00	236	349	272	290	261	270
Hf	4.49	4.24	4.71	4.69	4.85	5.64	4.97	5.94	7.22	7.09	7.00	6.63	9.60	7.34	7.89	6.90	7.18
Be	0.37	0.70	0.87	0.93	0.88	1.11	1.02	1.59	1.61	1.52	2.08	1.82	1.56	1.54	1.33	1.19	1.30
Ga	12.30	13.30	12.30	12.8	13.60	15.2	13.6	18.8	20.2	18	16.30	18.3	19.00	19.40	17.50	17.6	18.80
Ge	2.18	2.34	2.06	2.06	2.20	2.07	2.18	2.1	1.57	1.83	1.50	1.77	1.98	2.22	1.91	2.74	2.68
U	0.64	0.66	0.73	0.76	0.76	0.89	0.78	1.27	1.22	1.31	1.18	1.13	1.56	1.65	1.28	1.23	1.29
Th	2.54	2.74	2.98	3.05	3.20	3.68	2.92	4.78	5.2	5.24	5.02	4.74	6.93	6.06	5.93	5.39	5.70

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表 3 样品全岩主量(%)及微量(10^-6)元素分析结果

Table 3. Major elements and trace elements analysis data

样品编号	5031-1	HF-41-1	5045-1	HF-46-2	HF-46-4	5028-2	5015-1	5015-3	5031-3	5031-3	5013-4	HF-36-7	PM07-51-2	PM07-51-3	PM07-51-4	PM07-51-5	PM07-51-6
岩性	岩脉	岩脉	辉长岩	辉长闪长岩	辉长闪长岩	辉长闪长岩	辉长闪长岩	辉长闪长岩	辉长闪长岩	辉长闪长岩	辉长闪长岩	辉长闪长岩	闪长岩	闪长岩	闪长岩	闪长岩	闪长岩
SiO₂	39.11	45.62	41.90	48.44	42.17	47.19	47.82	47.81	42.44	42.44	44.24	49.92	50.69	50.38	50.59	51.79	51.23
AI₂O₃	10.18	10.06	10.76	13.75	13.07	14.03	14.50	14.62	15.22	15.22	15.30	13.42	15.96	16.21	15.34	15.39	15.3
Fe₂O₃	1.63	1.76	1.64	2.60	2.22	2.86	3.36	2.69	2.01	2.01	2.07	1.42	1.78	1.41	1.53	1.73	1.59
FeO	10.85	9.82	9.75	10.25	10.55	7.90	7.90	7.40	8.25	8.25	8.25	5.55	7.84	8.27	8.14	7.94	7.81
CaO	7.60	6.20	7.23	3.55	7.19	5.56	4.92	5.64	7.92	7.92	5.07	7.25	4.17	3.96	4.34	3.72	4.4
MgO	10.97	11.96	12.04	5.97	6.64	5.50	4.79	4.43	4.70	4.70	6.90	6.42	4.11	4.19	4.48	4.3	4.21
K₂0	0.31	0.38	2.32	0.48	0.46	3.66	1.92	2.04	2.33	2.33	3.08	2.58	0.34	0.33	0.33	0.31	0.32
Na₂O	0.38	0.11	0.69	3.75	2.90	3.53	4.71	4.83	3.84	3.84	2.04	3.89	5.34	5.57	5.45	5.53	5.52
TiO₂	2.92	2.70	2.47	4.15	4.01	3.41	3.07	2.78	3.75	3.75	3.74	2.05	2.74	2.86	2.88	2.96	2.87
P₂O₅	0.40	0.41	0.41	0.46	0.43	0.60	1.50	1.52	0.75	0.75	0.76	0.67	0.75	0.83	0.78	0.87	0.8
MnO	0.18	0.15	0.16	0.17	0.19	0.16	0.20	0.18	0.17	0.17	0.12	0.12	0.17	0.18	0.17	0.17	0.19
灼失※	15.13	10.48	10.32	6.13	9.90	5.33	5.08	5.82	8.40	8.40	8.18	6.51	5.96	5.76	5.95	5.25	5.73
H₂O+	3.97	5.39	2.18	3.50	2.18	4.44	2.98	2.62	3.20	3.20	3.48	2.16	2.91	3.22	3.23	2.81	2.62
FeOt	12.32	11.40	11.23	12.59	12.55	10.47	10.92	9.82	10.06	10.06	10.11	6.83	9.44	9.54	9.52	9.50	9.24
Fe₂O₃t	13.7	12.7	12.5	14.0	13.9	11.6	12.1	10.9	11.2	11.2	11.2	7.6	10.5	10.6	10.6	10.6	10.3
Mg#	65.1	68.7	69.2	49.9	52.6	52.4	47.9	48.6	49.5	49.5	58.9	66.4	47.7	47.9	49.7	48.7	48.9
La	41.9	43.4	53.4	44.3	44.7	73.2	62.7	64.9	67.5	79.6	71.1	77.5	69.7	76.3	74.4	70.8	69
Ce	84.2	88.8	106	91.7	92.4	142	134	139	142	166	147	150	154	162	162	152	145
Pr	10.2	11	12.3	11.3	11.4	16.3	16.2	16.9	16.5	19.7	16.9	17.4	18.1	19.4	19.4	18.7	17.4
Nd	40.2	43.4	45.2	45.2	46.3	61.3	64.2	66.2	64.2	78.2	63.2	65.2	69.6	73.5	73.2	69.2	66.8
Sm	7.92	8.47	8.53	9.12	9.42	11.8	13.6	13.9	11.9	16.1	12.5	12.2	12.8	13.7	13.8	13.1	12.9
Eu	1.92	2.85	2.46	2.45	2.57	3.52	4.12	4.32	3.51	3.79	3.32	3.22	3.91	3.97	4.18	3.74	3.7
Gd	6.6	7.16	7.26	7.96	7.8	9.95	12.2	12.5	11.2	14.8	10.4	10.4	10.8	11.9	12	11.2	10.9
Tb	0.91	1.08	1	1.1	1.12	1.35	1.8	1.79	1.45	1.95	1.46	1.4	1.72	1.71	1.77	1.61	1.59
Dy	4.65	5.06	5.08	5.32	5.56	6.83	8.95	8.78	7.3	10.5	7.38	6.94	8.48	8.67	8.91	8.46	8.21
Ho	0.82	0.9	0.9	0.96	1.02	1.2	1.63	1.58	1.26	1.79	1.29	1.25	1.54	1.62	1.62	1.56	1.49
Er	2.06	2.26	2.22	2.38	2.57	3.05	3.96	3.85	3.12	4.15	3.28	3.23	4	4.12	4.06	3.95	3.85
Tm	0.28	0.3	0.31	0.33	0.35	0.43	0.54	0.52	0.42	0.53	0.44	0.46	0.58	0.57	0.56	0.55	0.54
Yb	1.69	1.8	1.99	2.04	2.04	2.6	3.18	3.21	2.7	3.11	2.69	2.89	3.47	3.54	3.44	3.29	3.32
Lu	0.24	0.26	0.28	0.31	0.28	0.38	0.44	0.44	0.4	0.42	0.39	0.44	0.52	0.51	0.49	0.49	0.46
Y	19.8	21.6	22.3	22.5	22.8	28.1	39.1	36.2	30.7	42.3	30.8	30.6	34.1	36.2	35.6	34.1	34
∑ REE	223.39	238.34	269.23	246.97	250.33	362.01	366.62	374.09	364.16	442.94	372.	383.13	393.32	417.71	415.43	392.75	379.16
LREE	186.34	197.92	227.89	204.07	206.79	308.12	294.82	305.22	305.61	363.39	314.	325.52	328.11	348.87	346.98	327.54	314.8
HREE	37.05	40.42	41.34	42.9	43.54	53.89	71.8	68.87	58.55	79.55	58.13	57.61	65.21	68.84	68.45	65 21	64.36
LREE/HREE	5.03	4.90	5.51	4.76	4.75	5.72	4.11	4.43	5.22	4.57	5.40	5.65	5.03	5.07	5.07	5.02	4.89
Eu*	0.79	1.09	0.93	0.86	0.89	0.97	0.96	0.98	0.91	0.74	0.87	0.85	0.99	0.93	0.97	0.92	0.93
La_N/Yb_N	17.78	17.29	19.25	15.58	15.72	20.19	14.14	14.50	17.93	18.36	18.96	19.24	14.41	15.46	15.51	15.44	14.91
La_N/Sm_N	3.42	3.31	4.04	3.14	3.06	4.00	2.98	3.01	3.66	3.19	3.67	4.10	3.52	3.60	3.48	3.49	3.45
Gd_N/Yb_N	3.23	3.29	3.02	3.23	3.16	3.17	3.17	3.22	3.43	3.94	3.20	2.98	2.57	2.78	2.89	2.82	2.72
Cu	89.1	106	111	277	272	147	28.2	26.8	88.9	29.4	91.6	39.4	32.4	32.5	35.9	38.7	32.6
Pb	3.9	6.04	1.92	5.6	5.2	10.7	3.7	7.01	6.17	2.2	5.02	12.1	5.08	5.06	4.32	5.24	5.25
Zn	142	126	110	119	149	169	138	130	125	138	125	84	112	125	114	116	115
Cr	649	721	696	35.9	28.3	27.4	3.3	25.3	1.43	17.4	7.47	31.9	22.3	13.9	39.5	24.4	20.6
Ni	294	342	321	114	110	63.1	5.49	15.4	12.8	10.4	18.6	88.8	10.3	8.63	18.8	12.5	10.5
Co	58.5	61.1	53.3	53.1	46.1	34.3	10.2	9.97	28.2	9	28.7	28.4	25.8	23.8	25.8	26.7	23.9
Li	108	39.4	48	34	39	16	25.9	26.5	25.6	54.6	52.8	19.5	122	112	42	44	40.9
Rb	11.6	32	191	29.6	19.2	145	103	96.7	49.9	6.3	80.9	75.5	10.5	9.66	9.35	8.6	8.71
Cs	0.86	3.93	25.3	1.67	1.47	23.5	50.2	32.5	0.75	1.24	1.53	4.03	1.41	1.28	0.74	0.73	0.58
Sr	396	240	238	546	667	685	842	957	600	335	238	812	598	614	583	572	613
Ba	158	95.7	175	411	405	1610	1440	1940	984	155	506	902	397	410	393	398	421
V	322	283	270	431	457	297	226	197	357	294	347	151	263	264	274	271	258
Sc	24	28.8	25.7	18	19.4	14.2	10.4	12.8	18.8	13.9	13	8.35	14.3	13.8	14.5	13.8	15.2
Nb	39.8	44.1	48.6	44.1	42.6	71.7	45.8	45.7	65.5	48.4	67	71.2	73.7	79	76.8	77	75.5
Ta	2.67	3.18	3.24	3.36	3.29	5.01	3.03	3.06	4.5	3.21	4.52	5.12	5.06	5.46	5.29	5.41	5.42
Zr	241	232	252	275	267	421	265	264	326	276	340	433	335	350	374	350	349
Hf	6.6	6.32	6.86	7.78	7.5	10.7	7.26	7.35	8.68	7.66	8.78	10.6	9.76	10.3	10.6	10.5	10.2
Be	1.07	1.42	2.33	1.4	1.52	1.96	2.18	1.46	1.32	3.1	1.9	2.05	2.6	2.84	2.35	2.82	2.18
Ga	19.4	16.8	17.8	20.3	22.4	22	24	22.7	22.8	26.2	23.8	15	23.9	23.7	24.6	24.2	23.6
Ge	2.96	2.02	1.86	1.86	2.08	1.62	1.7	1.6	1.39	2.64	2.03	1.42	1.74	1.67	2	1.91	1.72
U	1.2	1.18	1.34	1.17	1.2	1.98	1.4	1.46	1.7	1.39	1.67	2.17	1.82	2.05	2.31	2	1.98
Th	4.49	5.4	6.38	5.07	4.73	8.51	6.61	6.7	6.77	7.02	6.51	9.11	7.15	8.46	9.84	8.23	8.24

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